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为解决煤矿井下现有湿式喷浆机中存在上料高度高、喷射能力小、手持式喷头操作劳动强度大、喷管易堵塞等问题,通过增加上料装置、精确喷淋装置,增大泵送缸径和行程,改进速凝剂系统和喷射系统,对湿式喷浆机的五大系统进行了优化。同时实验了初喷+复喷的喷浆工艺。结果表明:优化后的机组在喷射能力上提高了48.15%,达到9 m3/h,堵管的平均次数由原来3~5次/班降为现在1次/班,甚至不堵管,喷浆时的帮、顶回弹率分别控制在9%、13%以内。工人上料、喷射的劳动强度得到了明显降低,主要的技术参数优于大多数国内外同类产品。
In order to solve the problems of existing wet blasting machines in coal mines, such as high material feeding height, small ejection capacity, large hand-held nozzle operating labor intensity and easy nozzle plugging, etc., an increase of feeding device and an accurate spraying device are adopted to increase the pump Send the cylinder bore and stroke, improve quick-setting agent system and injection system, and optimize the five systems of wet-spraying machine. At the same time, the initial spraying + compound sprayed shotcrete technology was tested. The results show that the optimized unit has an increase of 48.15% in jetting capacity, reaching 9 m3 / h. The average number of tube plugging has dropped from 3 ~ 5 times / shift to the present 1 / shift, even without plugging. When the help, top rebound rates were controlled at 9%, 13%. Workers feeding, jetting labor intensity has been significantly reduced, the main technical parameters better than most similar products at home and abroad.